System.Numerics.Tests.cast_fromTest.RunByteExplicitCastFromBigIntegerTests C# (CSharp) Méthode

        public static void RunByteExplicitCastFromBigIntegerTests()
        {
            Byte value = 0;
            BigInteger bigInteger;

            // Byte Explicit Cast from BigInteger: Random value < Byte.MinValue
            bigInteger = GenerateRandomBigIntegerLessThan(Byte.MinValue, s_random);
            value = bigInteger.ToByteArray()[0];
            Assert.Throws<OverflowException>(() => VerifyByteExplicitCastFromBigInteger(value, bigInteger));

            // Byte Explicit Cast from BigInteger: Byte.MinValue - 1
            bigInteger = new BigInteger(Byte.MinValue);
            bigInteger -= BigInteger.One;
            value = bigInteger.ToByteArray()[0];
            Assert.Throws<OverflowException>(() => VerifyByteExplicitCastFromBigInteger(value, bigInteger));

            // Byte Explicit Cast from BigInteger: Byte.MinValue
            VerifyByteExplicitCastFromBigInteger(Byte.MinValue);

            // Byte Explicit Cast from BigInteger: 0
            VerifyByteExplicitCastFromBigInteger(0);

            // Byte Explicit Cast from BigInteger: 1
            VerifyByteExplicitCastFromBigInteger(1);

            // Byte Explicit Cast from BigInteger: Random Positive
            for (int i = 0; i < NumberOfRandomIterations; ++i)
            {
                VerifyByteExplicitCastFromBigInteger((Byte)s_random.Next(1, Byte.MaxValue));
            }

            // Byte Explicit Cast from BigInteger: Byte.MaxValue + 1
            bigInteger = new BigInteger(Byte.MaxValue);
            bigInteger += BigInteger.One;
            value = bigInteger.ToByteArray()[0];
            Assert.Throws<OverflowException>(() => VerifyByteExplicitCastFromBigInteger(value, bigInteger));

            // Byte Explicit Cast from BigInteger: Random value > Byte.MaxValue
            bigInteger = GenerateRandomBigIntegerGreaterThan(Byte.MaxValue, s_random);
            value = bigInteger.ToByteArray()[0];
            Assert.Throws<OverflowException>(() => VerifyByteExplicitCastFromBigInteger(value, bigInteger));
        }